package collection;

import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import java.util.stream.Collectors;

public class StreamApiDemo {
    public static void main(String[] args) {
        Random rand = new Random();
        List<Integer> list = new ArrayList<>();
        for (int i = 0;i < 10;i++){
            list.add(rand.nextInt(100));
        }
        System.out.println(list);

        List<Integer> list2 = list.stream().map(e->e*3).collect(Collectors.toList());
        System.out.println(list2);

        List<Integer> list3 = list.stream().filter(e->e%2==0).collect(Collectors.toList());
        System.out.println(list3);

        List<Integer> list4 = list.stream().sorted((e1,e2)->e2-e1).collect(Collectors.toList());
        System.out.println(list4);

        List<Integer> list5 = list.stream().map(e->e*3).filter(e->e%2==0).sorted((e1,e2)->e2-e1).collect(Collectors.toList());
        System.out.println(list5);
    }
}
